Following situation:
I have a Joomla site hosted at somesubdomain.somedomain.com

I have my own domain registered as mydomain.com, pointing to somesubdomain.somedomain.com

So, while this all works fine.

However, I want that in the browser's addressbar the registered domainname appears, which is now NOT the case:
If the user requests mydomain.com, the browser will display the homepage and in the address bar it will correctly display mydomain.com.

When he now clicks any menuitem the first time, Joomla will display the correct page of course,
but with:
somesubdomain.somedomain.com/?index.php/somepage
in the browser.

But my goal is to have
www.mydomain.com/?index.php/somepage

So basically, I want 2 things

1. have any requests prefix with "www."
2. have the original host name part replaced with my registered domainname

I was assuming this can be achieved with some simple item in ReDJ, for example:

FromURL: (.*)
ToURL: www.mydomain.com/$0
301 (Moved permanently)

So, if i request any page, what happens is that the browser's addressbar displays www.mradlmaier.com/$0 and because this page certainly doesnt exist, my host providers error page is displayed.

Can anyone please advice?
Or cant this be achieved with ReDJ?

To see if something more simple works, I created the following item:

FromURL: /index.php/mobile
ToURL: www.mradlmaier.com/index.php/mobile
301 (Moved permanently)

This changes the URL in the address (this is what I want), but I am getting this error:Fehler 310 (net::ERR_TOO_MANY_REDIRECTS

I am really at a loss:

Using .htacces doesnt change the URL in the browser's address bar, but serves the correct pages.

Using ReDJ instead of .htaccess changes the URL in the browser's address bar, but causes this: Error 310 (net::ERR_TOO_MANY_REDIRECTS

Why is something that simple, so complicated to achieve?

Luigi,
I have my DNS hosted at united-domains.de. There it points to somesubdomain.somedomain.com, but I changed it to point to the IP instead.

So, where and how do I add a ServerAlias to the somesubdomain.somedomain.com virtualhost configuration???

My provider doesnt have a full-fledged controlpanel, it is bplaced.net.

Can you exactly tell me what I have to ask support stuff to do? I have absolutely no clue what "adding a ServerAlias to the somesubdomain.somedomain.com virtualhost configuration"
means.

My domain name is mradlmaier.com, my host is mradlmaier.bplaced.net

Can you please advice?